US5843854AExpiredUtility
Mineral fibre composition
Est. expiryNov 23, 2010(expired)· nominal 20-yr term from priority
Inventors:Kirsti Marjatta KarppinenMichael PeranderPeter Arnold Henrik SolinAntero Olavi PehkonenSeija Marketta Maine
C03C 2213/02C03C 13/06
71
PatentIndex Score
46
Cited by
32
References
3
Claims
Abstract
A mineral fibre composition which is soluble in biological fluids contains substantially 45-65% by weight of SiO 2 15-40% by weight of CaO 0-20% by weight of MgO 0-6% by weight of Na 2 O+K 2 O and in addition aluminium and/or iron oxides as well as phosphorus oxide in such amounts that the weight ratio of P 2 O 5 to the sum of Al 2 O 3 and iron oxide is circa 0.4 to 6.
Claims
exact text as granted — not AI-modifiedWe claim:
1. Mineral fiber composition which is soluble in biological fluids, consisting essentially of ______________________________________
SiO.sub.2 49-56% by weight
Al.sub.2 O.sub.3
0.5-1.7 "
Fe.sub.2 O.sub.3
0-4 "
CaO 25-35 "
MgO 0-15 "
Na.sub.2 O + K.sub.2 O
0-6 "
P.sub.2 O.sub.5 0.5-5 "
______________________________________
2. The mineral fiber composition according to the claim 1, wherein said ratio is 0.5 to 2.
3. The mineral fiber composition according to the claim 2, wherein Al 2 O 3 is included in an amount of 1 to 1.7% by weight.Join the waitlist — get patent alerts
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